docs: def getOverlayMouseScale(self, ulOverlayHandle):
          """
          Gets the mouse scaling factor that is used for mouse events. The actual texture may be a different size, but this is
          typically the size of the underlying UI in pixels.
          """
  
          fn = self.function_table.getOverlayMouseScale
          pvecMouseScale = HmdVector2_t()
          result = fn(ulOverlayHandle, byref(pvecMouseScale))
          return result, pvecMouseScale